Answer:
B. 66
Step-by-step explanation:
73+25 = 98
Z = 98-32
Z = 66
 
        
             
        
        
        
Answer:
b) 0.0007
c) 0.4163
d) 0.2375
Step-by-step explanation:
We are given the following:
We treat securities lose value as a success.
P(Security lose value) = 70% = 0.7
Then the securities lose value follows a binomial distribution, where
 
where n is the total number of observations, x is the number of success, p is the probability of success.
Now, we are given n = 20.
a) Assumptions
- There are 20 independent trials.
- Each trial have two possible outcome: security loose value or security does not lose value.
- The probability for success of each trial is same, p = 0.7
b) P(all 20 securities lose value)
We have to evaluate:
 
0.0007 is the probability that all 20 securities lose value.
c) P(at least 15 of them lose value.)
 
d) P(less than 5 of them gain value.)
P(gain value) = 1 - 0.7 = 0.3
 
 
        
             
        
        
        
Answer:

Step-by-step explanation:
On a coordinate plane, a solid straight line has a positive slope and goes through (negative 4, 0) and (0, 2). This line has the equation

The origin belongs to the shaded region, so its coordinates must satisfy the inequality. Since

then the correct inequality is 

 
        
                    
             
        
        
        
This is 4x=2x-2 as a graph
 
        
        
        
Is there supposed to be a picture??
But to answer ur question when ur referring to x your referring to 1 hope this helps